Granted Patent
Utility
US 6,325,474 · App. 09/529,943
Device for writing on thermographic material
Inventors:
Wolfram Betzold, Leo Oelbrandt, Friedrich Stumpf, Thomas Zehetmaier, Ivan Hoogmartens, Luc Leenders, Hans Strijckers, Herbert Gebele, Franz Kappeler
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Apr 19, 2000
Inventors
Wolfram Betzold
Leo Oelbrandt
Friedrich Stumpf
Thomas Zehetmaier
Ivan Hoogmartens
Luc Leenders
Hans Strijckers
Herbert Gebele
Franz Kappeler
Assignee (at issue)
Agfa-Gevaert NV
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.